The invention provides a manufacturing technology of low-temperature and high-magnetic-induction oriented silicon steel with an excellent bottom layer, and belongs to the technical field of oriented silicon steel manufacturing. The manufacturing technology aims to obtain the excellent bottom layer adhesiveness, the good surface finish degree and the large-tension bottom layer, and is mainly technically characterized by comprising the steps: (1) the surface roughness Ra of cold-rolled strip steel is controlled to be smaller than 0.25; (2) the production (single face) of an oxidation film on thesurface layer of the decarbonized and annealed strip steel is controlled to be 2.5-3.5 [mu]m, and the atomic weight ratio of Si to Fe in the oxidation film meets the relation of Fe/(Si+Fe)=0.08-0.25;and (3) a certain quantity of one or more types of nano nucleating agents with the primary particle size being smaller than 200 nm and a certain quantity of one or more types of low-melting-point compounds with the melting point being lower than 950 DEG C are added into an MgO isolating agent subjected to high-temperature annealing, wherein the low-melting-point compounds include one or more types of compounds with the melting point being lower than 800 DEG C.